TW201323280A - Ball turret heat sink and EMI shielding - Google Patents

Abstract

A water resistant and electromagnetically shielded turret assembly, suitable for attachment to the undersurface of an unmanned surveillance aircraft. The turret, in its several variations, may contain one or more cameras, and may contain an internal positioning motor, which can be easily accessible for servicing.

Description

Spherical turntable radiator and electromagnetic interference shield Cross-reference to related applications

This application is related to a patent application filed by Tom Szrek et al., entitled "A tilted spherical turntable with a full-flat avoidance locking mechanism" (Attorney Docket No. 435410-000071), hereby incorporated by reference. full text.

This standard is generally related to the heat transfer and electromagnetic shielding applicable to the spherical turntable.

The Vietnam War is now considered a helicopter battle, and the current conflict between Iraq and Afghanistan may be remembered by the use of unmanned surveillance aircraft (UAV) or unmanned aircraft. Unmanned aircraft can help with long-range intelligence gathering, reducing the need for infantry to enter the enemy's "blind" area with little or no information about the enemy's position and strength. Unmanned aircraft can provide close contact support, such as identifying and eliminating targets of concern, reducing the need for exposed soldiers and/or pilots to lurk small teams of firepower, mortars, rocket grenades, roadside bombs, air defense weapons, missiles and other hazards. .

Although many of the unmanned aircraft currently in use are roughly the same size as manned aircraft, such aircraft are more expensive and may be detected for their size. Recently, smaller unmanned aircraft have been developed, which can be deployed in larger quantities and less expensive, resulting in greater use of individual units in this area. Unmanned Machines have some features that are difficult to balance because they cannot carry the load of larger unmanned aircraft. Moreover, the power of such smaller unmanned aircraft is limited by the size of the aircraft and, therefore, is limited during operation.

Drones typically mount cameras in a spherical turret assembly that can move in three degrees of space to allow the camera to track targets on the ground without having to change the flight path of the aircraft. Information such as image data can be captured by a sensor such as a camera and passed back to the controller.

Since sensitive cameras and other equipment such as precision motors and constant level systems are weather sensitive and must remain separate from the components, the equipment is typically enclosed in a crucible or casing. Traditionally, the turntable has been made of glass or plastic, see, for example, U.S. Patent Application No. 2009/0216394 A1 (issued on August 27, 2009). A disadvantage of polymers and glass envelopes is that they may allow electromagnetic radiation to enter the turntable and interfere with sensitive camera equipment. Polymers and glass are also generally thermal insulators, so that heat may accumulate inside the turntable and endanger the equipment. It can also be a solid metal turntable, but it is heavy and not ideal for aerial surveillance.

Therefore, it is desirable to have a spherical turntable that is both lightweight and waterproof, but also includes a shield that isolates electromagnetic radiation and includes a heat sink that removes heat accumulated in the turntable.

The present disclosure relates to a detection camera, particularly for a turntable that is housed on the lower surface of an unmanned detection aircraft.

The turntable can include a front case and a rear case. Preferably, the rear case may have an O A ring groove into which an O-ring can be placed, although an O-ring groove can alternatively be placed on the front casing or can have a plurality of O-rings. The front case may have one or more transparent windows for transmitting light, infrared or other electromagnetic radiation. This radiation can be received and recorded by a camera attached to the interior of the turntable and facing the transparent window.

The front shell may be constructed of a polymeric material that may be coated within its interior such as a conductive and thermally conductive coating of a metal that is preferably copper. At least a portion of the back shell may also be electrically conductive, particularly within its interior. The rear portion is preferably a metal coated polymer, but may also be, for example, an anodized metal. The composition of the front and rear shells can be different.

The front and rear shells may be conductive and heat-missile O-rings that are located in the O-ring groove and are in contact with the conductive surfaces of both the front and rear shells. In some configurations, a conductive coating on the inner surface of the shell can cover and cover the exterior of the shell to maintain electrical contact between the O-ring groove and the inner surface of the shell. Any such outer metal coating is preferably covered by a portion of the other shell to prevent exposure of the components.

The O-ring seals the connection between the front and rear shells such that the envelopes formed by the shells are water or water resistant under aircraft design conditions having at least one safety margin. Preferably, the O-ring is electrically conductive and has an increased thermal conductivity over conventional elastomeric materials. For example, a particular elastomeric material known in the art may have a thermal conductivity greater than about 0.50 W/(m.K) under normal operating conditions, or generally much higher. In terms of electricity, it is preferable to have an electrical connection between the inner front shell and the rear shell surface through the O-ring, so that the turntable as a whole is electromagnetically shielded. Therefore, it is preferred to maximize the amount of conductive internal surface and maintain electrical connections throughout the interior surface.

Various additional embodiments incorporating and modifying the above embodiments are included herein.

The accompanying drawings, which are incorporated in FIG Those skilled in the art will be aware that the drawings are merely illustrative, and that those shown therein may be modified in accordance with the present disclosure in accordance with the present disclosure.

Here, various embodiments of the present invention are described in which a camera turret housing that shields electromagnetic radiation and that effectively dissipates heat accumulated in the system to the detection aircraft is provided. The shell is also preferably geologically light and waterproof.

It will be apparent to those skilled in the art that the following detailed description is only illustrative and is not intended to be limiting. Other embodiments of the present invention are susceptible to suggesting skilled persons from the disclosure herein, in accordance with the related art, the provision and operation of information systems for such use, and other related art.

Not all of the general features of the illustrative embodiments described herein are shown and described. In the development of any such practical embodiment, a majority of decisions made specifically for implementation must be made to achieve the developer's specific objectives, such as compliance with prescribed military, security, social, environmental, health, and commercial related restrictions. And these goals are due to implementation and vary by developer. Moreover, such development efforts can be complex and time consuming, but it is a routine project that reveals the generality of the content.

Relevant terms throughout the disclosure must be understood consistently with the typical meanings established in the relevant art. However, the scope of the disclosure is not limited, and as set forth below, exemplary clarifications of certain terms and descriptions of the words and concepts are provided.

As used below, the term transparent refers to transparency in the appropriate wavelength of electromagnetic (EM) radiation. It can include a very wide EM frequency range or a very narrow set of frequencies. Most useful are the visible and/or transparent regions of the spectrum; however, other regions may also be used for imaging purposes.

As used herein, water-resistant means that under any expected operating conditions, it is contained in a harsh climate and does not seep water.

Figures 1A and 1B are perspective views of the unmanned detection aircraft 100. An example of an aircraft 100 may have a fuselage 102 that mounts a left wing 104 and a right wing 106. The aircraft 100 can be launched by the engine 108 of the rotary propeller 110. The aircraft 100 can be stabilized by means of the elevator 114 and the tail 116 mounted on the rafter 112. Preferably, aircraft 100 is small enough for personal soldiers to carry and has a top speed of about 55 knots and a speed of about 25 knots. However, the characteristics of the aircraft may vary depending on the invention claimed herein. The ball turret described herein can be attached to any suitable aircraft.

The aircraft 100 can include a ball turret assembly 118 that can be suspended from the lower surface 120 of the fuselage 102. The ball turret assembly 118 can include a ball turret 122 that can be mounted in the outer casing 124 on the lower surface 120. The ball turret 122 can be mounted in front of a fairing 126, which can also be part of the outer casing 124. Preferably, the spherical turntable 122 holds the infrared camera 130 and the color camera 132. In one example, red The external camera 130 can be a Micro Tau 320 or 640 camera available from FLIR, and the color camera is a 5 megapixel MT9PO31 EO sensor. However, the invention described herein can also be used with any suitable camera device.

If two cameras are used in accordance with this example, the two are preferably configured to achieve about 30 frames of video video per second, but it is also possible to transmit still images with different resolutions, preferably higher resolutions. Other types of cameras and/or sensors may be mounted in the spherical turntable 122 in addition to or in place of the drawings. The ball turret 122 is rotatable by a yoke mounted on the fairing 126. In a preferred configuration, the fairing 126 in combination with the ball turret assembly 118 reduces drag because the yoke is located behind the ball turret 122. The cameras 130 and 132 can face below the lower surface 120 of the body 102 by means of an actuator for tilting and rolling the ball turret 122. As shown in FIG. 1A, the spherical turret is rotated such that the cameras 130 and 132 are directed to the left side of the aircraft 100. Figure 1A shows the approximate imaging area that cameras 130 and 132 can see at this location. FIG. 1B shows an example of a rotating ball turret 122 that positions cameras 130 and 132 to view the area in front of aircraft 100.

Fig. 2A-E is a close-up view of 118 examples of the spherical turret assembly in Fig. 1. Figure 2A is a close-up perspective view of 118 spherical turret assemblies, Figure 2B is a bottom view of 118 spherical turret assemblies, 2C is a side view of 118 spherical turret assemblies, and 2D is a spherical turret It is a front view of 118 cases, and the 2E figure is a rear view of 118 spherical turntable assemblies. The ball turret assembly 118 can include a ball turret 122 that is mounted to the fairing 126 on the lower surface 120 of FIG. 1 via the leveling assembly 200. yoke 202 can extend from the fairing 126. The yoke 202 can include a pair of prongs 204 and 206 having ends that retain the ball turret 122 via pins 208 and 210. The forks 204 and 206 can have individual ends opposite the pins 208 and 210 that are coupled by the crossbar 212. The crossbar 212 can be attached to a roller drive shaft 214 that supports the yoke 202 from the fairing 126. The ball turret 122 can include an outer surface 220 that is preferably waterproof and sealed to protect mechanical and electrical components such as cameras 130 and 132 stored therein. Since the yoke 202 is preferably free of any actuation components or electronic components, the number of parts that must be waterproofed can also be reduced. In this example, outer surface 220 can have an aperture 222 for infrared camera 130 and a mounting cylinder 224 for color camera 132.

The roller shaft is indicated by dashed line 240, which is pointed forward relative to the aircraft 100. The ball turret 122 is preferably rotatable about a roller shaft 240 via a roller drive shaft 214 that is rotated by a roller actuator in the fairing 126. The tilt axis indicated by the dashed line 250 is offset from the roller shaft by 24090 degrees. Preferably, the ball turret 122 is thus rotatable on the forks 204 and 206 about the tilting axis 250 via tilt actuators included in the turret 122. Wiring harness 260, including power, data, and communication, may extend from fairing 126, through the interior of drive shaft 214 to ball turret 122, and to yoke 202, along with fork 204 to the interior of spherical turret 122.

Various mechanisms for locating and guiding the turntable are well known in the art. Some such institutions will be disclosed herein.

3A and 3B are cross-sectional views showing the spherical turret 122 of Fig. 2 and the associated spherical turret assembly 118. As in the example of Figure 3A-3B As shown, the inner surface 400 of the spherical turret 122 can enclose various mechanical and electrical components. The infrared camera 130 can be mounted on or connected to the circuit board 410, and the color camera 132 can be mounted on or connected to the circuit board 420. The circuit boards 410 and 420 can be fixed to the inner surface 400 to set the orientation of the infrared camera 130 through the aperture 222 and set the orientation of the color camera 132 through the mounting cylinder 224. Circuit boards 410 and 420 can also be condensed into a single circuit board and can be placed anywhere in the ball turret, or can be placed outside of the ball turret in a less preferred embodiment. Various wiring mechanisms can be used depending on the contents of the turntable and the number, type and placement of the cameras.

The tilt actuator can include a tilt motor 430 that rotates the drive shaft 432. Drive shaft 432 can drive gears in gearbox 434. Gearbox 434 can rotate the rotation from motor 430 downward to rotate drive shaft 436 mounted on pin 208 that is rotatably coupled to fork 204 of yoke 202. The other fork 206 of the yoke 202 can be rotatably mounted on the pin 210 on the exterior of the ball turret 122.

The yoke 202 can be mounted on a drive shaft 214 that is coupled to the fairing 126. The fairing 126 can enclose an actuator for roller or disk action. Therefore, the roller actuator can drive the drive shaft 214 and the yoke 202. The fairing 126 can enclose a disk or roller motor 440 that rotationally drives the drive shaft 442 of the gearbox 444. Gearbox 444 in turn can drive drive shaft 214 to rotate yoke 202. 3C is a top plan view of the mount 124 including the fairing 126 and the ball turret 122. In one embodiment, the fairing 126 can enclose a circuit board 450 that holds electronic components for controlling the tilt and roller actuators. Drooping The straight tab 452 can include an electrical connector 454 that provides a connection to the electronic components contained in the body 102. A set of cables 456 can extend from the connector 454 via the apertures 458 to provide control and data signals to and from the electronic components in the fairing 126 and the ball turret 122.

As shown in FIG. 2B, wiring harness 260 including wiring for power, data, and communication may extend from fairing 126 through the interior of drive shaft 214 to ball turret 122. As shown in FIGS. 2B and 2C, the wiring harness 260 can be attached to the yoke 202 and attached to the inside of the spherical turntable 122 with the fork 204. The control for the roller and the tilt actuator preferably avoids the ball turret 122 rotating the yoke 202 to entangle the wiring harness 260. Since the data connections are hardwired by sensors such as cameras 130 and 132, the maximum bandwidth is preferably achieved by the image data obtained by cameras 130 and 132.

This illustrative configuration allows the cameras 130 and 132 in the turntable 122 to have maximum field of view for the region of interest and reduce the resistance of the ball turret assembly 118. As explained above, the disk or roller mechanism (actuator) that drives the yoke 202 can be located behind the ball turret 122 in the fairing 126. Since the actuator for the roller action is preferably mounted in the fairing 126 and the movement preferably occurs in the roller actuator in the fairing 126 to rotationally retain the yoke 202 of the ball turret 122, it is preferred The yoke 202 in the embodiment has no moving parts or electronic components. In a particularly preferred embodiment, this configuration may only allow the ball turret 122 and fairing 126 to be waterproof to protect the electronic and mechanical components of the ball turret assembly 118 contained in the ball turret 122.

The turntable 122 preferably has a spherical shape because of its ease of operation and thermodynamic properties. However, it can be other shapes like teardrop, oval or rectangular mirror.

The turntable can include a front case and a rear case. Figures 4A-D and 5A-B are various views of the front case. 4A and 4C are side views, FIG. 4B is a view taken from the rear, and FIG. 4D is a cross-sectional plan view taken along line 470. The front case may have one or more transparent windows 471 to transmit light, infrared or other electromagnetic radiation. This radiation can be received and recorded by a camera attached to the interior of the turntable and facing one of the transparent windows. In one embodiment, there may be two camera assemblies, one for detecting and recording infrared rays and the other for detecting and recording visible light. It can also be used in other combinations, as well as other camera types, such as those used in ultraviolet light detectors. It can also be a multi-infrared camera for multi-wavelength range of infrared light. In one embodiment, there may be two identical or similar camera or camera lenses configured to record a stereoscopic view. The camera can preferably be mounted to the inner surface 475 of the front housing at mounting point 472 by means of attachment mechanisms well known in the art. Preferably, the camera is attached through a conductive mechanism such as a conductive bolt, a collet or an equivalent. Thermal grease, thermal adhesive, heat pad or equivalent can be used to enhance the thermal connection between the camera and the inner surface of the front case. Alternatively, the camera can be attached to the rear case by the same mechanism.

The front shell can be constructed of a lightweight material. Preferably, the material is a polymer, in one embodiment xenoy. Another suitable embodiment can be polycarbonate, or polycarbonate with polybutylene terephthalate (PBT) and/or polyethylene terephthalate (PET). In one embodiment, the polymer can be formed in a mold or by most other mechanisms known in the art.

The inner surface of the front shell may be coated to its interior 475 by a conductive and/or thermally conductive coating such as metal. The coating can be made by a mechanism known in the art. Plated. Preferably, the coating is non-magnetic. Electroplating can have one or more layers that can be made of different metals. For example, in one embodiment, the conductive coating is a thin nickel layer followed by a thick copper layer with a small nickel layer on top to enhance corrosion resistance. In this embodiment, the copper layer may preferably have a thickness of at least about 0.0635 mm (0.0025 inch) and a total coating thickness of about 0.762 mm (0.003 inch). It can be a combination of other metals, or a number of layers, or a layer thickness. For example, in a preferred embodiment, the total coating thickness of the metal is in the range of from about 0.07 mm to about 0.13 mm. If copper is used in addition to other less conductive metals, it is preferred to use copper as much as possible to improve thermal conductivity and electrical conductivity. There are other highly conductive metals equivalent to copper, and there are other suitable metals that can replace the nickel in the above examples.

In one embodiment, the turret may include a motor (either 436 of Figure 3B) or one of the plurality of drive shafts (430 of Figure 3B) or a plurality of motors. The turntable may also include a gearbox (434 of Figure 3B) that may be attached to region 473 of the inner surface of the front casing. The shaft can exit the turntable via aperture 474. Preferably, the shaft is thermally conductive and can act as a heat sink to transfer heat collected from the thermally conductive inner surface of the rotating table to one or more locations outside the turntable. In one embodiment, heat is eventually dissipated by convection of the wind as the aircraft flies in the air. The shaft is preferably sealed off the turntable to ensure that the turntable is water or water resistant. Such sealing can be accomplished by O-rings or other mechanisms known in the art.

There are several heat sources in the turntable. Each camera may generate heat and the motor may generate heat. Other related wiring and electronic structures may also generate heat. In an illustrative embodiment, the IR in the turntable may produce 1 watt. Heat, while the motor can produce 2 watts of heat.

Figures 7A-6B are a view of the back shell example. Preferably, at least a portion of the back shell may also be conductive at least within its interior 601. For example, the configuration and plating of the back shell may be substantially the same as that of the front shell; however, the composition of the front shell and the rear shell may be quite different. It is preferably a metal coated polymer.

Alternatively, since in one embodiment the back shell can be made smaller or substantially smaller than the front shell, the back shell can be made of anodized metal because its weight is not as important as the front shell. If the back shell is made of anodized metal, this means having an inner metal layer, coating the oxide of the metal, or, in one embodiment, coating the second metal on the base metal of the back shell Oxide. The inner metal layer is preferably conductive and is used for heat conduction and conduction, which contributes to electromagnetic shielding. If an anodized metal back shell is used, the area surrounding the O-ring groove 602 of the O-ring (region 603 in the example of Figure 6B) preferably has a conductive coating for engagement with the O-ring. a layer wherein the conductive coating is electrically connected to a majority of the metal of the back shell. Mechanisms for coating an anodizable metal region with other metals to prevent anodization in this region are well known in the art. The second best case, if the anode layer is small enough, depending on the metal and other conditions, the coating and the thermal conductivity can be sufficient.

Preferably, the rear casing may have an O-ring groove 602 into which the O-ring may be placed, although the O-ring groove may alternatively be placed on the front casing or may have a plurality of O-rings.

The front and rear shells can be electrically and/or thermally conductive elastic O-rings (8th) 801) in the figure, which is located in the O-ring groove and is in contact with the conductive surfaces of both the front and rear casings. In some configurations, a conductive coating on the inner surface of the shell can cover and cover the exterior of the shell to maintain electrical contact between the O-ring groove and the inner surface of the shell. Thus, the region 603 of FIG. 6B and the surface 604 of FIG. 6A may be coated, and preferably extend across the O-ring groove 602 to the inner surface of the rear casing 601 to form a continuation coating. When the front case and the rear case are engaged as shown in Fig. 8, the front case in this embodiment preferably covers the coated portion to prevent exposure to the member.

The O-ring seals the connection between the front and rear casings such that the envelopes formed by such shells are water or water resistant under aircraft design conditions with at least a safe margin. Preferably, the O-ring 801 can be electrically conductive and have an increased thermal conductivity over typical elastomeric materials. For example, in one embodiment, the O-ring may be constructed of a metal filled elastomer such as silicone rubber. Metal filling examples and other types of more directional elastomers are well known in the art (see, for example, U.S. Patent No. 7,695,647, U.S. Application Serial No. 2011/0103021 A1). A special conductive elastomeric material known in the art can have a thermal conductivity greater than about 0.50 W/(mK) under normal operating conditions, or often higher, such as 3 W/(mK), 7.5 W, in one embodiment. /(mK) or higher.

Electrically, it is preferred to have an electrical connection between the inner front shell surface 475 and the rear shell surface 601 through the O-ring 801 such that the turntable is used for electromagnetic shielding. Therefore, it is preferred to maximize the amount of internal surface of the conductance and maintain electrical connections throughout the interior surface.

There are many mechanical connections in the art such as the shell of the front shell to the back shell. method. Additionally, one of the shells can have a plurality of compliant members attached thereto that can engage in corresponding cavities or holes 501 of the other shell and thus include a load spring engagement mechanism. When engaged, the compliant spring or hoop is locked to the cavity or hole and prevents separation of the front and rear casings. This configuration has the advantage of disassembling the turret without the need to loosen the bolt to repair the camera or other components in the turret, or to replace O-rings or other parts. The front and rear shells can be disengaged, for example, by bending or compressing the spring or appending the attachment to the point of the locking mechanism.

Alternatively or in addition, one of the shells may be configured with a snap ring groove to position a portion of the other shell to assist in clamping the front and rear shells together. For example, the groove 605 can be disposed in the back shell (see Figures 6B, 7B, and 8), and the edge of the front shell can include a small lip at at least some locations along its perimeter that engages the groove 605 to create a lock Buckle mechanism.

The illustrative embodiments have been described with reference to specific configurations. The above description of the specific embodiments and examples of the present invention are provided by way of illustration and description, and the invention is not to be construed as limited.

100‧‧‧Unmanned detection aircraft

102‧‧‧ body

104‧‧‧left wing

106‧‧‧right wing

108‧‧‧ Engine

110‧‧‧ propeller

112‧‧‧椼

114‧‧‧Elevator

116‧‧‧ tail

118‧‧‧Spherical turntable assembly

120‧‧‧lower surface

122‧‧‧Spherical turntable

124‧‧‧Shell (mounting seat)

126‧‧ ‧ fairing

130‧‧‧Infrared camera

132‧‧‧Color camera

200‧‧‧ Changping Assembly

202‧‧‧ yoke

204‧‧‧ fork

206‧‧‧ fork

208‧‧ ‧ sales

210‧‧ ‧ sales

212‧‧‧cross bar

214‧‧‧Roll drive shaft

220‧‧‧ outer surface

222‧‧‧ aperture

224‧‧‧Installation cylinder

240‧‧‧ Roller

250‧‧‧ tilting axis

260‧‧‧Wiring harness

400‧‧‧ inner surface

410‧‧‧Circuit board

420‧‧‧ boards

430‧‧‧ tilt motor

432‧‧‧ drive shaft

434‧‧‧ Gearbox

436‧‧‧ drive shaft

440‧‧‧ disk or roller motor

442‧‧‧ drive shaft

444‧‧‧ Gearbox

450‧‧‧ boards

452‧‧‧ vertical adjustment piece

454‧‧‧Connector

456‧‧‧ cable

458‧‧‧ aperture

470‧‧‧ line

471‧‧‧Transparent window

472‧‧‧Installation point

473‧‧‧Area

474‧‧‧ aperture

475‧‧‧ inner surface, inner front shell surface, interior

501‧‧‧cavity or hole

601‧‧‧Internal (back shell)

602‧‧‧O-ring groove

603‧‧‧Area

604‧‧‧ surface

605‧‧‧ trench

801‧‧‧O-ring

In the drawings: Figures 1A and 1B show an unmanned detection aircraft having a spherical turntable assembly.

2A-E is a close-up view of an example of a spherical turret assembly mounted on an aircraft of Figures 1A-B. The drawings shown are a perspective view (Fig. 2A), a bottom view (Fig. 2B), a side view (Fig. 2C), a front view (Fig. 2D), and a rear view (Fig. 2E).

Figure 3A-C is a view of the spherical turret of Figures 2A-E. In particular, Fig. 3A is a cross-sectional view, Fig. 3B is a cross-sectional plan view taken along line 460 of Fig. 3A, and Fig. 3C is a cross-sectional plan view of a ball turret assembly example of Fig. 2A.

4A-D is a view of a front case of one of the spherical turntables. 4A and 4C are side views, FIG. 4B is a view taken from the rear, and FIG. 4D is a cross-sectional plan view taken along line 470.

Figures 5A-B are different perspective views of the front shell.

Fig. 6A is a perspective view, and Fig. 6B is a perspective view of the front case.

Fig. 7A is a rear view, and Fig. 7B is a cross-sectional side view of the rear case.

Figure 8 is a side and cross-sectional view of the shell prior to engagement with the back shell.

100‧‧‧Unmanned detection aircraft

102‧‧‧ body

104‧‧‧left wing

106‧‧‧right wing

118‧‧‧Spherical turntable assembly

120‧‧‧lower surface

122‧‧‧Spherical turntable

124‧‧‧Shell (mounting seat)

126‧‧ ‧ fairing

130‧‧‧Infrared camera

132‧‧‧Color camera

Claims (22)

A waterproof and electromagnetic shielding turntable assembly comprising: a front shell and a rear shell, the front shell or the rear shell comprising an O-ring groove, the front shell comprising one or more transparent windows, and the front shell and the rear shell each Having an inner and outer surface, wherein the front shell primarily includes a first polymeric material and is coated with a first metal component layer on at least a majority of its inner surface, and wherein the back shell includes at least one conductive portion, the conductive The portion includes a second metal component; the conductive elastic O-ring is located in the O-ring groove and is in contact with the contact surface of the front case and is in contact with the contact surface of the back case to be in the front case and the rear Forming a waterproof seal between the shells; wherein the contact surface of the front shell is electrically conductive, the layer being electrically connected to the coated inner surface of the front shell, wherein the contact surface of the back shell is electrically conductive, and the back shell The conductive portion is electrically connected, wherein the front case, the O-ring and the rear case together comprise a waterproof enclosure, and further comprising an electromagnetic shield; and at least one camera assembly is attached to the interior of the front or rear case , it can receive and record through one or more Electromagnetic radiation of at least one of the transparent windows. The assembly of claim 1 further includes one or more motors for rotating the turntable assembly, the one or more motors being enclosed by the waterproof enclosure. For example, the assembly of claim 1 of the patent scope, wherein the turntable has It is roughly spherical. The assembly of claim 1, wherein the O-ring has a thermal conductivity greater than about 0.50 W/(m.k) under normal operating conditions. The assembly of claim 1, wherein the contact surface of the front shell comprises a continuation of a coating layer that is the same as the first metal composition layer applied to the inner surface of the front shell. The assembly of claim 1, wherein the back shell mainly comprises a second polymer material, and the conductive portion of the back shell comprises a second metal component layer applied to the second polymer material. The assembly of claim 6, wherein the second conductive metal component is substantially the same as the first conductive metal component. The assembly of claim 6 wherein the composition of the second polymeric material is substantially the same as the first polymeric material. The assembly of claim 1, wherein the back shell mainly comprises a metal. The assembly of claim 9, wherein the metal of the back shell is anodized, the inner layer of the metal covered by the thinner anode layer, and wherein the conductive portion comprises the inner layer. The assembly of claim 1, wherein the first metal component layer is less than about 0.5 mm in thickness. The assembly of claim 1, wherein the first metal component is substantially copper. The assembly of claim 11, wherein the first metal component layer has a thickness of between about 0.07 mm and about 0.13 mm. The assembly of claim 1, wherein the rear casing includes the O-ring groove, the contact surface of the rear casing includes at least a portion of a surface of the O-ring groove, and the contact surface of the rear casing A portion of the outer surface of the back shell. The assembly of claim 14, wherein the back shell mainly comprises a second polymer material, and the conductive portion of the back shell comprises the second metal composition layer coated on the second polymer material And wherein the contact surface of the back shell comprises the same continuation as the second metal composition layer applied to the second polymeric material. The assembly of claim 1, further comprising: a plurality of compliant members attached to the first one of the front or rear case; and corresponding to the second person located in the front or rear case a compliant member, each of a plurality of cavities or openings; wherein at least a portion of each compliant member engages with its corresponding cavity or opening to reversibly lock the front housing by the rear housing; The back shell can be removed from the front shell by applying a compressive force or tension to each of the compliant members such that the portion of each compliant member is disengaged from its corresponding cavity or opening. The assembly of claim 1, further comprising a heat sink in contact with the inner surface of the front case for directing thermal energy from the inner surface of the front case to a position outside the turntable. An assembly according to claim 1 further comprising one or more solid thermal conduction channels in contact with the inner surface of the rear casing for directing thermal energy from the inner surface of the rear casing to the turntable One or more external position. The assembly of claim 1, wherein the camera assembly is attached to the interior of the front or rear case via one or more thermally conductive fasteners, and wherein the camera assembly is configured to be maintained normally At least about 1 watt of heat is produced in the continuous operation. The assembly of claim 1, wherein the O-ring has a thermal conductivity greater than about 3 W/(m.k) under normal operating conditions. For example, in the assembly of claim 1, there are at least two camera assemblies, wherein one of the camera assemblies includes an infrared camera, and the other of the camera assemblies includes a visible wavelength camera. A waterproof turret adapted to be mounted to a lower surface of an aircraft, comprising: a first shell and a second shell, each shell including an inner surface and an outer surface, each inner and outer surface being an electrical conductor, and the camera assembly is attached to The inner surface of the first shell or the second shell; a mechanism for reversibly disengaging the first shell from the second shell to access the camera; for electrically connecting the inner surface of the first shell to the second a mechanism for the inner surface of the casing; and for operating the turret to continuously direct at least 3 watts of heat from the inner surface of the first and/or second casing to one or more of the exterior of the turret The location of the institution.